This example shows three motors that are driven by a pump. Each motor has a different load. The open center valves direct pump flow to a reservoir when no motors are running. This means that the pump will not have to run constantly at the relief valve setting.

Fig. 1 shows how the three control valves are opened and then closed one after another. Fig. 2 shows how the motors start to spin and then stop when the corresponding valve is opened and closed. Fig. 3 shows how the open center design succeeds in reducing pump torque when no motor is used.


Fig. 1 Control valve opening states


Fig. 2 Motor speeds


Fig. 3 Pump torque

medium	Value: Oil() Type: Medium Description: Medium in the component